Hi there!
Yes you can search the whole site for any flower varieties by typing in the name or a key word of what you're looking for in the upper right hand corner search box (light green) Click "Go" and the SierraFlowerFinder will suggest relevant varieties. When I typed in "Melissa" I got this :

Sierra Flower Finder is dedicated to the professional floral community by Sierra Flower Trading. Through this collaborative site, we are creating the opportunity for breeders, growers, wholesalers and florists to share their knowledge and passion for the incredible diversity of flowers that make our industry so unique.